Yes....ask your dentist.

Brushing and flossing often prevent plaque and tartar from forming. However ,once tartar  is formed it will be more difficult to remove and requires a visit to the dentist  for a professional cleaning. Poor oral hygiene and tartar deposit can  cause bad breath , tooth decay, and gum disease

Good morning Sir, Tartar or calculus, once formed, can only be removed after a visit to the dentist. A routine cleaning(scaling & polishing) is done to remove any tartar deposits on the teeth and gums. Tartar is nothing but calcification with colonies of bacteria which contribute to bad breath and gum infection and therefore must be removed. Once the tartar is removed, if the bad breath persists, one must rule out any decay/cavities or other indigestion or systemic issues.

Yes Tartar which is hardened plaque layer harbours a lot of bacteria resulting in bad breath as well as gum irritation. Better go to a dentist and get proper scaling and polishing done. Maintain the oral hygiene as per instructions of the dentist